Reverse Circulation Drill Rig ET642

Reverse Circulation Drill Rig ET642

High performance Reverse Circulation (RC) exploration drill rigs models ET642-RC and EWT642-RC. The self-propelled ET642 exploration drill rig features a flat track (steel or rubber) Caterpillar system, while the self-propelled EWT642 RC drilling rig features a multidirectional AWD Hydrostatic 4 wheel drive system, providing great maneuverability in restricted areas. The EWT642’s AWD 4 wheel drive axles are extremely powerful, and can easily overcome crimps and climb slopes up to 35% with the same stability as the track chain.

Our equipment has been having good reputation for its simplicity, efficiency, maneuverability, productivity and in particular on fuel consumption. Please note that below specifications can be adapted to your needs on request, for example, the must structure designed and can be build for drill pipe of 3 m (10’), 4.5 m (15’) or 6 m (20’).ET/EWT series exploration RC rigs are designed with the end user in mind. You will be able to benefit from its unique features optimized for high performance, efficiency and reliability in any operational environment.Working temperatures: All our standard equipments are meant to operate CONSTANTLY at any temperature varying between - 45 to + 50 degrees Celsius (-49 F to 122F)

Build Your Rig




    Hydraulic power of 160 HP
    Pullback capacity of 48000 lbs (21 770 kg)
    Rotary drives with variable/reversible hydraulic motor and automatic constant rotation power control
    Unique pipe handling system
    Drilling angle is 0-100 degree from horizontal
  • The main advantages of ET/EWT series RC drill rigs are its extreme maneuverability; pullback capacity of 48000 lbs (21 770 kg); hydraulic power of 160 HP; rotary drives with variable/reversible hydraulic motor and automatic constant rotation power control; and a unique pipe handling system. These features enable ET/EWT series RC rigs to easily access almost any type of difficult terrain, and give it enough power to drill in any type of mixed hard formations. The drilling angle is 0-100 degree from horizontal, which is suitable according to your drilling requirements.


Additional Information



Carrier : Tracks mounted
Drilling techniques : Reverse Circulation; DTH; Rotary
Drilling applications : Mineral exploration

Weight and Dimensions

Length: 10.31 m <> 35’-8’’
Width: 2.26 m <> 7’-4’’
Height: 3.04 m <> 10’-0’’
Weight: approx. 14 968kg <> 33 000lbs (W/out pipes)

Undercarriage & Chassis

Tracks mounted steel shoes
Track length: 3.48m <> 137’’
Track shoes width: 500mm <> 19.7”
Pressure applied brake system
Heavy duty link profile
Gradability 19° <> 35%
Ground clearance 380mm <> 15”
Travel speed 4.4km <> 2.6mph
(4) Heavy duty hydraulic out-riggers (2 front & 2 rear)
Pipe rack: Not on board

Power Unit

Cummins electronic diesel engine model QSB4.5-4cyl. (24 volts) turbocharged water cooled
160 hp – 119 kw @  2000rpm
Operation fuel consumption 7.6 L/hr <> 2.01 gal/hr
Fuel tank: 227 L <> 60 galls
Filtering system two stage (Primary @ security)
Emission certification: U.S. EPA Tier 3, EU Stage III
Integrated control safety panel, 24 volts

Hydraulic power unit & components

Pump drive: Two (2) variable displacement piston pumps, load sensing, pressure compensated, and one (1) gear pump dedicated for accessories.
Top drive: automatic constant rotation power control
Hydraulic tank capacity 227 L. <> 60 gall.
Hydraulic oil cooler
Filtration system (5 micron)
Integrated safety system
Body valves assembly for complete controls (Tram, positioning and drilling)
Auto-mechanical lubricator for the down the hole hammer
Hoses and fitting connection « seal lock »
Integrated safety system, over heat, low levels etc.
Integrated extra hydraulic power supply «HP»
*#1 connection: 5hp
*#2 connection: 5hp

Mast & Feed Assembly

Dump (0 to 100° from the horizontal)
Heavy duty mast structure designed for drill pipe 6.00 m <> 20’
Drill Head travel length «Stroke» of 7 m <> 23’
Feed system hoisting and pull-down power is provided by link- chain that use powerful hydraulic gear box controlled hydraulically for accurate trust
Pull down/back force «Traveling» 42 000 Lbs <> 186.8 KN
Top drive mounting plate is equipped with urethane anti-wear slides

Remote control panel “Electric”

Aluminum remote control, ergonomic design for complete operation

Rotary Head “RC”

1s Torque capacity: 4751lb-ft <> 6431 Nm
Rotation speed: 0-250rpm
Automatic constant rotation power control
Floating spindle for RC, saving sub and inner tube

Break-out & clamps jaws

Hydraulic swing clamping retractable jaws
Swing torque 9,980daN <> 22,436lbf
Clamp force 26,049daN <> 58,560lbf
Hydraulic retractable slip plate. Clamps force 26,049daN <> 58,560lbf)
Hydraulic centralizer
Min-Max opening (60-222 mm <> 2.3” -8¾”)

Water Injection Pump

Water tank stainless steel 454L<>120gall
Model AI0413
Double piston pump
Volume; 34 L/min <> 9 gal/min
Pressure: 38 bar <> 550 psig
Revolution speed: 500 rpm
Water tank stainless steel 454L<>120gall

Hole Depth Capacity**

1300 ft (400 m) with 4 inch RC drilling pipes
(Drill pipe 4’’(101.6 mm) diameter; Hole size- 5¾"(146mm); Hard Rock formation;
Compressor: 500Psi (3.447Mpa) / 1200Cfm (33.98 m3 /m))
* Subject to ground conditions, compressor or mud pump capabilities, type and a quality of drilling equipments used (pipes etc..) and driller skills.


Heavy duty
Two (2): Front out riggers c/w integrated security lock (Fixed)
Two (2): Rear out riggers c/w integrated security lock (Fixed)

Drilling Angle

0 to 100°  from the horizontal

Drill pipe length

10 ft (3 m) or 15 ft (4,5 m) or 6 m (20')
Pipe Rack Not On board

Optional Equipment

The RC sample splitter installed beneath the RC cyclone and used to collect a representative sample fraction energy
Reverse circulation sampling collection Cyclone
Rod handling and Rod Feeder to load and unload
Cummins engine 179kw<>240hp
Swing-extendable pipe loading Jib 544kg
Rigid-Flex mechanical sample collector
Radio remote
Air swivel
Blow back system
Automatic Lubricator assy (Included)
Mechanical thread greaser
Winter package “Engine–water tank”
Front blade


Overseas packaging: 40 ft container
Inland shipment: Flatbed
* Some of the features are optional
** Subject to ground conditions, compressor or water / mud pump capabilities, type and a quality of drilling equipments used and driller skills
  • Reverse Circulation Drill Rig ET642